Pith Number

pith:7WKBAMBU

pith:2004:7WKBAMBUTGXOSYGZF3LIP5LZAG

not attested not anchored not stored refs pending

Effects of the Environment on the Properties of Seyfert Galaxies

Bruno M. Rossetto, Christopher N. A. Willmer, Marcio A. G. Maia, Rodolfo S. Machado

arxiv:astro-ph/0404380 v1 · 2004-04-20 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7WKBAMBUTGXOSYGZF3LIP5LZAG}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-04T16:43:36.492231Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd9410303499aee960d92ed687f5790193428b574ca04f9c0b3ed8f59b2dd887

Aliases

arxiv: astro-ph/0404380 · arxiv_version: astro-ph/0404380v1 · doi: 10.48550/arxiv.astro-ph/0404380 · pith_short_12: 7WKBAMBUTGXO · pith_short_16: 7WKBAMBUTGXOSYGZ · pith_short_8: 7WKBAMBU

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/7WKBAMBUTGXOSYGZF3LIP5LZAG \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: fd9410303499aee960d92ed687f5790193428b574ca04f9c0b3ed8f59b2dd887

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "774c2ebbb77bee8c295023ff5774b5202d1b2dee66301dacf7a56cb79d53ebc7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-04-20T12:56:33Z",
    "title_canon_sha256": "a364ff59a02f9f3dc6c5477c2045ac6fa4c65292f27ee7a649ae205c2ba94ced"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0404380",
    "kind": "arxiv",
    "version": 1
  }
}